Portable grease gun



' June 28, mag. M. B. LINTON ,9

- PORTABLE GREASE GUN I Filed June 9, 1932 8 Sheets-Sheet 1 I fi /a/ fTI a7 Mezwy/v a 4/,vra/V EN OR June 28, 1938. I M. B. LIVNTON 2,121,972

' roamaw enmsneuu' Filed June 9, 1932 8'Sheets-Sheet 2 3 mewwa'zwmv INVEN TOR A TTORNE Y June 28, 1938.- M. B. LI'NTON Y PORTABLE GREASE GUNFiled June. 9, 1932 8 Sheets-Sheet 5 Mae/m9 6 4mm INVENTOR un 28, was.M. B. LmT 5N 2,121 912 PORTABLE GREASE Gun Filed June 9, 1952 8Sheets-Sheet 6 M52 WY/Y 6- L/Nm/v INVENTOR A ORNEY June 28, 1938. I

M. B. LINTON PORTABLB.GREASE GUN Filed June 9, 1932 I M 8 Sheets-Sheet 7Maewm .5- mm INVENTOR ATTORNEY Patented June'28, 193

" UNITED STATES roa'ranm GREASE GUN I Merwyn B.'Linton, Tyler, Ten,as'slgnor'to The Lubrication Corporation, Chicago, 111., a corporationof Delaware Application June 9, 1932, Serial No.'616,1'l3 s Claims (c1.cal-41.1)

' This invention relates to portable grease guns and booster pumpstherefor, and particularly to the comparatively large types of greasegun which are used in service stations and garages. In this type ofdevice, it is desirable to provide a grease guncapable of containing alarge quantity of lubricant so that the gun will not have to berecharged except at comparatively -long intervals. Previous guns of thistype have had to be recharged by hand which made this operation dif-viicult and disagreeable as well as ineflicient because of the liabilityof getting dirt and air into' the container which would seriouslyinterfere with the eiiicient. operation of the device. It is an objectof thisinvention to provide a grease gunv of this type which can bereadily recharged without any danger of introducing dirt 5 vide a deviceof the above character which will be capable of supplying the grease atan extremely high pressure without necessity of making the greasecontainer itself out of material capable of withstanding such pressure.

v I It is a further object of this invention to provide a safetylatching device to prevent accidental opening of the grease containerwhile gthere is pressure within.

It is a further object of this invention to provide a generally improveddevice of the character described. 1

The invention will be better understood upon reference to theaccompanying drawings, in which:

I Figure'l is an end elevation showing one modiflcation of my invention.

Figure 2 is a side elevation of the device shown in Figure 1.

Figure 3 is a side elevation showing the same 5 device as shown inFigure 2, but with the parts in a different position.

Figure 4 shows the booster pump which forms apart of the device shown inFigures 1 to 3, parts being in section for better illustration thereof.

) Figure 5 is a sectional plan view taken along the line 5-5 of Figure4. v

Figure 6 is a sectional side view taken along the line 6-4 of Figure 4.g

Figure '1 .is a side elevation of the parts shown i in Figure 4.

its base.

Figure 8 is .a sectional elevation showing the internal construction ofmy improved grease gun.

Figure 9 is a plan view taken along the lines 94 of Figure 8.

Figure 10 is a detail view showing the control valve.

Figures 11; 12, and 13 are diagrammatic sec .tional views showing theoperating positions of c the valve, shown in Figure 10.

upper part 6f the container slightly raised from Figure 16 isa sideelevation of this niodiflca tion showing the gun in full open andelevated position.

Figures 17.18, and 19 are diagrammatic sectibnal views showing the threepositions of the triple-port control valve used in connection with thesafety latching device.

Figure 20 is an isometric view of this control valve. Figure 2115' aplan view of the gun shown in Figures 14 to 16, with parts broken awayto show the triple port control valve.

Figure '22 is another modification of yieldable base cartridgeconstruction.

' Referring to the drawings, the reference numeral I indicates acontainer which is mounted on a base 2 and removably attached thereto bymeans of the clamps 3. The base 2 is mounted on a platform 4 which ispreferably provided with wheels 5 so that it may be easily moved fromplace to place: a handle or other means to pull it may be provided ifdesired. The platform or truck 4 comprises a pair of inwardly turned U-shaped side rails 6, which serve as a track for the rollers I, uponwhich the base 2 is mounted. Two or more .guard members 8' are ilxed tothe base 2 to prevent the base from becoming displaced with respect tothe track 6.

The device is provided with elevating mecha- "nism for the containerwhichcomprises a pair of hoisting members 9 which are pivoted to theplatform, as indicated at l0, and to a bracket II on the container, asindicated at 12. In order to .maintain the base and the container invertical alignment as they are separated, a pair of side members l3 arepivoted to the hoisting members 'I3 is formed by the addition of themembers l6 and I! which are pivoted together at l8 and to .the othermembers as indicated.

It will be noted that the pivot I8 is vertically -slidable in thevertical slot 19 formed in the bracket H. The member I3 is provided witha pin 20 which is adapted to be engaged by a hook 2|, which is pivotallymounted on the member 9, as indicated at 22. A lug 23 is carried bythe'hook 2| for engaging the member 9 to hold the hook in the pin 20, tohold the parts in that position while a new grease cartridge is beingloaded on to the base. The grease is supplied in'a cartridge 25 which isloaded on to the base, as indicated in Figures 3 and 8. It will beunderstood that paper, sheet metal; or any other material which mayserve as an inexpensive shipping container for the grease or otherlubricant may be used for making the cartridge.

The container is provided with a centrally disposed and verticallyextending tube 26. This tube comprises a passage 21, which serves as agrease discharge outlet, and in applying the container to the base, thetube 26 is forced down through the center of the grease cartridge to apoint substantially at its bottom. Slots 28 are provided at the lowerend of the tube 26 to prevent the tube being sealed against the bot tomof .the grease cartridge. The container carries a plunger 29 having anexpansible sealing member 30 in the form of a cup leather.

The walls of the container and the grease car tridge are slightlytapered for the purpose of permitting easy insertion and removal of thecartridge and the expansible plunger serves to follow the contour of thecartridge and maintain a grease tight fit. The plunger is operated byair under pressure, which is supplied through the inlet 3|. The valve'32 is mounted on the container, as indicated, in order'to control theflow of air in a manner hereinafter to be described.

The valve 32'is provided with two ports 33 and 34 and the container isprovided with two separate passages 35 and 36, as indicated in Figure 9.The passage 35 communicates with the passage 21 in the tube 26, and thepassage 36 communicates directly with-the part of the container abovethe plunger, as indicated in Figure 8. Air vents 31 and 31A are providedfor the valve ports 33 and 34, respectively, so that either of thepassages 35 and 36 may be connected to the atmosphere when desired.

The booster pump comprises a cylinder 39 which is connected by means ofan inlet check ential piston 46 provided with suitable packings 41 and48 is mounted to reciprocate in cylinder 39 and in an operating cylinder49. These cylinders are preferably, but not necessarily, formed integralwith the container. A suitable head or cover 59 is detachably mounted onthe cylinder 49 in fluid pressure tight relation thereto; The inner endof the cylinder 49 may be vented, if desired, at 5| and may also beprovided with a lubricant receiving opening 52. Air or other operatingfluid is supplied to the cylinder 49 under pressure through the conduit31. A yoke 53 is mounted on the piston 46 and is adapted to straddle thevalve rod 54, which is slidably mounted in a standard 55, and in aprojection 56 forming part of the block of the cylinder 49.

Suitable collars 51 and 58 are mounted on the valve rod to limit itsmovementin each direction. The valve rod' 54 extends through the'passageway 31 so that it may prevent the flow of operating fluid to thecylinder. It is also provided with a port 59, which, in the positionshown in Figure 4, registers with the passage 31 so that fluid may besupplied therethrough to the cylinder 49.. When the valve mechanism ismoved to the left, from the position shown in Figure 4, a second port 60in the valve rod 54 forms a connection between the passage 31 and thevent 6|, so that when the valve rod is in this position, the pressurewill be released from the cylinder 49.

.In order to insure that the valve rod 54 will be maintained in one orthe other of its operating positions, a snap action mechanism isprovided. A yoke 62 is slidably mounted on the valve rod 54 in such amanner that its movemechanism.

The operation of the device is as follows:

A lubricant cartridge 25 being mounted on the base2, the container islowered and the clamps afflxed, so that the parts are in thepositionshown in Figures 1, '2, and 8. When it is desired to supplylubricant under pressure through the discharge outlet 69, the valve 32is movedto the position shown in Figure 11. Operating fluid may thenflow through the port 33 into the container above the piston 29, and itwill also flow to the booster pump through the conduit 31. The piston'29 is forced down on top of the lubricant, displacing it through thepassageway 21 into the cylinder 39 of the booster If resistance isencountered in the discharge outlet, (which may be insured if desired byincreasing the tension of the spring 42) and if the valve. rod 54 is ina position toviut off admission of operating fluid to the cylinder 49,the pressure of the lubricant in the cylinder 39 will force the pistons41 and 48 back to the position shown in- Figure 4. This operation willcause the yoke 53 to contact with the yoke 62, moving it back past thecenter line between the pivots 66.

When this position has been reached, the spring 65 will continue toforce the yoke 62 to the left, with reference to Figure .4, until thecollar 61 contacts with the cylinder block. The port 59 will thenregister with the passage -31 to admit air into the cylinder 49, and thepiston 48 will then be very forciblwmoved-tothe left until the pin 63has pushed the yoke 62 back past the enter line ofthe pivot 66. Thevalve action will then snap over to the left causing the admission ofoperating fluid to the cylinder 49 to be cut off, and the port 68 willthen connect the passage with the cylinder 49, permitting the release ofpressure on top of piston 29. It will then return the pistons 46 and 48to the position on top of the shown in Figure 4, and this operation willbe continuously repeated as long as the fluid pressure is supplied. v

It will be understood, of course, that if there is no resistance in thedischarge outlet 39, then no pressure will be built up in the cylinder39 and the operation of the booster pump will be unnecessary. Under suchconditions, there will be no pressure to move the pistons 46 and 48 tothe right and the operation of the booster pump will .be discontinueduntil there is some further back pressure in the discharge outlet.

when it is desired to insert a new cartridge,

the valve 32 is turned to the position shown in Figure 12. The admissionof compressed air to the passage 36 is then cut off and the passage 36is connected to the atmosphere through the vent 31. The port 34 willthen be in registration with the inlet 3I and also with passage 35, andoperating fluid can flow into the passage 21 and downwardly through thispassage to'the lower part of the container. This operation will causethe piston 29 to be raised to the top of its stroke, as indicated inFigure 8. The valve 32 is now turned to the position shown'in Figure 13,and the clamps 3 may then be released and swung out clear of the lugs 24so that the container may be moved upwardly and to the right to theposition. shown in Figure. 3. The linkage 9, I3, etc., moves the base 2to the right at the same rates the containers move to the right. Thecontainer and base are thereby kept in vertical alignment with eachother. When the parts have reached the position shown in Figure 3,'thehook 2! may be used to hold the parts in that position until the wholecartridge has been removed and the new one mounted on the base 2. When'the new cartridge has been mounted on the base, the piston. 29 maybepermitted to drop and rest moved downwardly into position; During thisoperation, the valve 32 may be-leftin theposition shown in Figure 13, inwhich the supply of compressed air is entirely cut off, and in which thevents 31 and 38 are both open so that no air can be trapped in thedevice to prevent the proper assembly of the container withthe base.

Referring to the construction shown in Figures 14 to 21, the referencenumeral 18 indicates an annular projection cast integral with the lowerpart of the container I. The upper surface of. this projection being.slightly bevelled, as indicated at 11, provides a seat for latches 12,the contour of the lower surface of this projection'being formed so asto enable the operator to snap the upper part of thecontainer into placeon its base.

A plurality of latches 12 are provided, pivoted at 13, and held normallyin the position shown in Figure -14 by coiled spring 14. Recesses 16 inthe base casting allow sufficient -movement of lrtches 12 to disengageprojection 18. Recipro-' eating push rods 16' with cam surfaces 11engage cam surfaces 13 on latches 12, and through links collapse bymeans cartridge as the container is being 19, pivots 88, ball joints 8I,piston 82,- cross arm 83, pivot 84, link 85, pivot 86, and foot lever 81force latches 12 into the position shown in Figure 15. A latch 88,pivotally mounted on the foot lever 81 at 89 and held normally in aninward position by coil spring 98 forms a means of looking the latchesin an open position, as shown in Figure 15. v

A one way trip lug 9I pivotally mounted on the side of the container andheld normally in the position shown by spring 92 forms, a means oftripping latch 88 during a downward or closing motion of the upper partof the container I. Spring 92 being substantially weaker than spring 98,it willbe seenthat trip lug 9I in its upward travel will yieldand passprojecting surface 93 of. latch 88 without tripping same.

Springs 94 and 96 normally hold foot lever 81 in the position shown inFigure 14.

A piston 91 extending into the recessed base of the cartridge 98, asshown in Figure 14, and having a downward annular projection 99 whichenters annular groove "I88in base" casting'96 forms a means of lockinglatches 12 in the position shown in Figure 14 when pressure is appliedwithin the cartridge, causing its recessed base to of the corrugationsIN and piston 91 to move downward. It will be seen that the lowersurface I82 of downward projection 99 contacts surface I83 of latches12, thus locking them.

Piston rod I84 having an extension I85 in which slots I86 and I81 arecut form a guide for piston 91 and allow cross arm 83 and piston 91 toreclprocate, irrespective of each other, within the limits of saidslots.

Base casting 96 may be a single casting or a plurality of castingssuitably assembled.

A downwardly extending boss we threaded to receive cap I89 is providedto facilitate assembly.

' A packing gland H8 and expanding ring III are provided to form an-airtight seal of expanding chamber II2.

To lift piston 91 into the position shown in Figures 14 and 15, air orother fluid pressure is injected into expanding chamber H2 at port I,I3,

which is supplied from valve II4 by flexible con- In order to insure apositive locked position of" the latches during a time when pressure isbeing exerted within the container, the pressure 35 and 36 (Figure 21)to the inside of is inoperative and port H8 is in such a position 'as toallow chamber II2 to exhaust to the atmosphere through passage II5, portH8, and

vent H9. 1

It may be added that in this position we grease gun is closed withlatches locked, and grease being discharged through passage 21.

Position 2 of the control valve is shown'in Figure 1'1. In thisposition,it will be seen that the space-above plunger 29' is exhausting to theatmosphere through passage 36, port H6, and vent 31. It will also benoted that port I "is in such a position as to allow pressure to flow'from supply I28b through port II1, through passage 35, passage 21 tothe lower part of the container belowthe plunger 29. Port H8 in thisposition is inoperative.

It is assumed that in this position the grease has been discharged fromthe container and the plunger 29 is forced upward into the positionshown in Figure 8.- Position'3 of the control valve is shown in Figure18. In this position, it will be seen that the spaces above and belowplunger 29 are exhausting to the atmosphere through passages 21-45, portH1, and vent 31a, and through passages 36, port H6, and vent 31. It willalso be noted that port H8 is in such a position as to allow pressure toflow from supply 12011 through port H8, through passage H5, and port H3into expanding chamber H2, causing piston 91 to rise, releasing latches12 so that they may be manually unlatched by means of foot lever 81.

The operation of the device is as follows:

A grease cartridge 98 being mounted on base 96, the container islowered. Trip lug 9| comes in contact with surface 93 of latch 88,disengaging lugs 12! and I22 and allowing manual mechanism to releaseand latches to return to position shown in Figure 14. During this time,the control valve will be in the position shown in Figure 19. Thecontainer is moved further downward and latches into position by reasonof springs 14 of latches 12.

When it is desired to supply the lubricant under pressure, the controlvalve is moved to the position shown in Figure 17. Pressure then flowsthrough port H6 and passage 36 in the container above the plunger 29,forcing grease through passage 21 to be picked up by the booster pumpand discharged in the manner described heretofore in this specification.

As pressure is applied within the container, the recessed base of thecartridge collapses, and piston 91 moves downwardly, projection 99engaging surfaces I03 of latches 12 and locking them in position.

When the grease has been discharged from the cartridge and it is desiredto remove same, the control valve I I4 is moved to the position shown inFigure 18. In this position, pressure is allowed to flow through portH1, passages 35 and 21 into the container below the plunger 29, causingsame to be raised out of the cartridge. In

this same position, pressure has been allowed to exhaust above theplunger 29 through vent 31.

The control valve is now moved to the position shown in Figure 19. Inthis position, pressure is allowed to flow through port H8, passage H5,and port H3 into chamber H2, causing piston 91 to rise and releaselatches 12. Pressure is now applied manually on foot pedal J23, openingthe latches, lugs HI and I22 becoming engaged and holding them open.

Thecontrol valve is now returned to the position shown in Figure 18,pressure being allowed to flow through passages 35 and 21 into thecontainer, causing same to rise from its base, being held in line by theelevating mechanism heretofore described in this specification.

With reference to the construction shown in Figure 22, the referencenumeral 98A indicates the outer wall of a grease cartridge. This wall isof circular cross section and may be formed of rigid material. A flange98B is formed at the periphery of the lower end, and the metal is turnedinwardly and upwardly, as indicated at 98C, to form recess 98D, in whichthe slidable bottom 98E is retained. The slidable or telescoping bottomis formed with a downwardly projecting flange 98F to fit into and form alubricant tight seal with the recess 98D. In this manner, the necessityfor the use of a flexible diaphragm is obviated. 1

I claim:

1. In a portable grease gun, a portablewheel platform, an'open bottomedcontainer, a base mounted on said platform and forming a bottom for saidcontainer, means for attaching said container to sai'd'base, means insaid container for discharging the contents thereof, and a booster pumpmounted on said container for increasing the pressure at which thecontents of said container are discharged.

3 2. In a portable grease. gun/apparatus, a portable wheeled platform, abase mounted on said platform, an open bottomed container, means forclamping said container to said base whereby said base may form a bottomfor said container, and hoisting mechanism carried by said platform forlifting said container from said base.

3. In a device of the class described, a portable platform, a basemovably mounted upon said platform, an open bottomed container, meansfor releasably attaching said container to said base, hoisting mechanismcarried by said platform for lifting said container away from said' baseand means for maintaining said container and said base in axialalignment with each other.

4. In a device of the class described, a port able platform, a basemounted .on said platform, an open bottomed container adapted to besecured to said base, means carried by said container for dischargingthe contents thereof, hoisting means for moving said container away fromsaid base, said hoisting means maintaining said container at all timesin axial alignment with said base, and means for preventing thesimultaneous operation of said hoisting means and said dischargingmeans.

5. In a device of the class described, a base, a grease cartridgeadapted to be mounted on said base, an open bottomed container adaptedto be mounted on said base, and when so mounted to enclose said greasecartridge, hoisting means for lifting said container away from said baseand said cartridge, said hoisting means being attached to both saidcontainer and said base, pressure means for discharging the grease fromsaid cartridge, and a safety device for preventing the simultaneousoperation of said pressure means and said hoisting means.

6. In a device of the class described, a platform, a base movablymounted on said platform, an upwardly tapering cartridge adapted to bemounted on said base, an open bottomed tapering container adapted to befitted over and to conform to said cartridge and secured to said base,and means carried by said container for discharging the contents of saidcartridge.

7. In a device of the class described, a port able platform, a basemovably mounted on said platform, a cartridge adapted to be mounted onsaid base, a container adapted to be fitted over said cartridge andsecured to said base, means carried by said container for dischargingthe contents of said cartridge and hoisting means carried by saidplatform for lifting said container away from said cartridge and saidbase.

8. A grease gun comprising a barrel, a cartridge for charging saidbarrel, a detachable closure for one end of said barrel, pressure meansto discharge grease from said cartridge, latch 15 secured to thecylinder having communication with the tubular member, and a pistonforming a part of the gun assembly operable in the cartrldge adapted tofollow the lubricant as it is discharged into the cylinder.

10. A lubricating gun comprising, a cylinder having a plunger therein, atubular member communicating with the cylinder and permanently securedto and extending at an anglefrom the cylinder, a piston guided bytheextension, and a removable lubricant cartridge secured to the cylinderenclosing the member and piston.

11. In combination, a lubricant gun comprising, a pump cylinder, apiston mounted for reciprocation in said cylinder, a tubular member.providing an; inlet passageway for the cylinder permanently connectedtherewith and extending I laterally therefrom, a low pressure pistonslidable on said tubular member, and a lubricant cartridge detachablyfixed to said gun about said tubular member with its inner wall inengagement with the lowpressure piston.

12. A lubricating gun comprising,- a lubricant cylinder having a plungertherein, a tubular member providing a cylinder inlet passageway forlubricant permanently fixed to and extend- 'ing at an angle fromthecylinder, and a piston mounted on and guidedby said tubular member.

13. In a grease gun organization, the combination with .a holder for acharge of grease, of

a grease -conducting tube co-operable with the holder for transferring acharge to the holder, 9. piston slidable on the tube, a grease.container separable from the tube and co-operable therewith and with thepiston so that when pressure is applied to a mass of grease in thecontainer 9. portion thereofwill be moved through they tube andconducted'to the charge holder, means including said piston for exertingpressure upon grease in the container, and means for ejecting a chargefrom the holder.

14. A lubricating device comprising a cylinder,

9. plunger therein,'a lubricant container detach- I ably secured to saidcylinder at an angle thereto, a tubular member secured to said cylinderat one end and projecting into said container and establishingcommunication between said cylinder and said container, a pistonslidably and snugly fitting said container and mounted on said tubularmember, and means for moving said .piston toward the opposite end -ofsaid tubular member.

15. A lubricating device comprising a cylinder,

a plunger. therein, a lubricant container detachably secured to saidcylinder at an angle thereto, a tubular member-secured to said cylinderat one end and projecting into said container and establishingcommunication between said cylinder and said container, a pistonslidably and snugly fitting said container and mounted on said tubularmember, and means for exerting fluid pressure on the piston in saidcontainer on the side nearest the cylinder.

16. In a grease dispensing apparatus, a container having a dischargepassage, a discharge port in said passage, a follower within thecontainer and selective means comprising a single manually controlledvalve member to admit air under pressure into the container to act onthe follower and move the latter in one direction to force the greasethrough the discharge port when the control valve is opened or to admitair to the container toforce the follower in an opposite direction.

17. In a grease dispensing apparatus, a container having a dischargepassage and a discharge port in said passage, a follower within thecontainer, means to supply airunder pressure to the apparatus, andselective means to direct the air supply to either side of the followeror to exhaust the air from either or both sides of said follower, saidselective means being constructed and arranged to cut off the air supplyto each side .of the container before the air is2o exhausted from thatside.

18. In a grease dispensing apparatus, a container having'a dischargepassage and a dis charge port in said passage, a manually oper-' atedspring closed valve for controlling the dis- I charge port, a greasecartridge adapted to be the container against pivotal movement. a

20. In a grease dispensing apparatus, a wheel supported platform, anopen bottom container pivotally supported by the standards above theplatform, means to dispense the contents from the container, a closurefor the bottom of the container, a locking bolt slidable in one of thestandards a keeper carried by the container for engagement by one andall of the locking'bolts to hold the container against pivotal movement,and a spring actuated lever engaging the other end of the locking boltto control the operation of said bolt.

21. In a lubricant gun, a body having a chamber with a side inletopening, a plunger operable to force lubricant from the chamber, a cap,integral with the body and surrounding the inlet opening,'a tubeconnected with the body' and communicating with the inlet opening andpro- -jecting in a direction parallel with the axis of the cap, alubricant container having an open end detachably connected with the capwhereby the container projects therefrom parallel with the tube, and apiston slidable on the tube and fitting the inside of the container.

22. A lubricant gun including, a body having a high pressure chamberwith a side inlet opening, a plunger operable to force lubricant fromthe chamber, a tubular member attached to the body to project therefromand to communicate with the opening whereby there is a duct for passaduct for the supply of lubricant to said cylinder, a removable lubricantcartridge secured relatively to said cylinder and independently of saidtubular member and having communication' with said tubular member at theopposite end thereof, and a piston forming a part of the gun assembly,operable in'said cartridge and adapted to follow the lubricant in saidcartridge as it is discharged to said tubular member from saidcartridge.

25. In combination, a lubricant gun comprising, a pump cylinder, a highpressure piston mounted for reciprocation in said cylinder, atubularmember providing a passageway for supplying lubricant to said cylinder,said member being permanently secured relative to said cylinder with amajor portion of its axis extending at an angle less than 180 withrespect to the axis of said cylinder, a low pressure piston slidable onsaid member, and a lubricant cartridge detachably fixed to said gunindependently of said member with the inner wall of the cartridge inengagement with the low pressure piston.

26. A lubricating gun comprising, a lubricant cylinder, a plungeroperative in said cylinder, a tubular member secured at one of its endsrelative to said cylinder and providing a duct for the supply oflubricant to said cylinder, said member having the major portion of itslength including its other end extending at an angle less than 180 withrespect to the axis of said cylinder, and a piston slidably mounted onand guided by said member.

27. A lubricant gun including, a body having a chamber with a sideopening, a plunger for forcing lubricant from the chamber, a tubularmem- .ber permanently secured to and projecting from the body incommunication with the opening, the outer end of the tubular memberbeing open, a removable substantially cylindrical lubricant cartridgesecured to the body to be in communication with the chamber and havingits inner wall concentric to and substantially parallel with the tubularmember, and a follower slidably carried on the tubular member andslidably fltting the inner wall of the cartridge.

28. A lubricating gun for use with a substantially cylindrical cartridgehaving an open end and a closed end, comprising a high pressurecylinder, a plunger therein, and a tubular member laterally connected tosaid cylinder, said tu-' bular member being adapted to extend into theopen end of the cartridge to a point adjacent to the closed end of thecartridge, and a circular follower of a diameter substantiallycorresponding to the internal diameter of the cartridge surrounding thetube and adapted to be placed over the lubricant in the open end of thecartridge.

29. A lubricating gun, for use with a substantially cylindricalcartridge, having an open end and a closed end, comprising a highpressure cylinder, a plunger therein, and a tubular member laterallyconnected to said cylinder, -said tubular member being adapted to extendinto the open end of the cartridge through the lubricant to a pointadjacent to the closed end of the cartridge, a circular follower of adiameter substantially equal to the internal diameter of the cartridgesurrounding the tube and adapted to be placed over the lubricant in theopen end of the cartridge, and means for fastening said gun barrel tosaid cartridge, a check valve positioned in the tubular member, and acheck valve positioned in the gun barrel.

30. A lubricating device comprising a pump body, pump mechanism in, saidbody, said device including an elongated tubular part extendingoutwardly of the body and formed at its outer end with a lubricant inletopening, a follower mounted on said part for movement longitudinallythereof, a cartridge having an open end to fit over said pump part withthe follower slidably engaging the cartridge side wall, and means fordetachably securing the cartridge to the pump body independently of saidelongated tubular part.

31. A lubricating device comprising a pump body, pump mechanism in saidbody, said device including an elongated tubular part extendingoutwardly of the .body and formed at its outer end with a lubricantinlet opening, a follower mounted on said part for movementlongitudinally thereof, a cartridge having an open end to fit over saidpump'part with the follower slidably engaging the cartridge wall, meansfor detachably securing the cartridge to, the pump body independently ofsaid elongated tubular part, a fluid operated 'motor for operating saidpump mechanism and connections for supplying fluid to said motor and tosaid cartridge on the side of the follower adjacent the pump body.

32. A lubricating device comprising a pump body formed with a fluidmotor cylinder, a piston reciprocable in said cylinder, a plungerconnected to and operable by said piston, an elongated tubular memberextending outwardly from said pump body and formed at its outer endwith'a lubricant inlet opening, an open ended lubricant containersecured to said body around and concentric with said tubular member, afollower slid ably mounted on said member and engageable with thecontainer whereby movement of the follower outwardly of the member willforce lubricant from the container into said lubricant inlet cpening. 1

33. A lubricating device comprising a pump body formed with a fluidmotor cylinder, a piston reciprocable in said cylinder, a plungerconnected to and operable by said piston, an elongated tubular memberextending outwardly from said pump body and formed at its outer end witha lubricant inlet opening, an open ended lubricant container secured tosaid body around and concentric with said tubular member, a followerslidably mounted on said member and engageable with the containerwhereby movement of the follower outwardly of the member will forcelubricant from the container into said lubricant inlet opening andconnections to supply fluid to said motor cylinder and to the containeron the side of the follower adjacent the pump body.

34. A lubricating device comprising a central body portion, a pumpmechanism carried thereby, an elongated hollow member carried by saidbody portion and having an open end forming an inlet for said pumpmechanism, a lubricant container having an open end and a closed end,means for detachably securing the open end to said containerto said bodyportion about said hollow member, and means for moving lubricant in saidportion and having an open end forming an inlet for said pump mechanism,an open end lubricant container having a closed end, means fordetachportion" in a position encompassing said hollow member, saidhollow member extending through the container to a point proximate saidclosed end, a follower slidably. carried by said hollow member forengaging the surface of the lubricant in said container, and means forapplying fluid under pressure against the side of the follower.

remote from the lubricant to force lubricant'to said closed end and forsupplying fluid under 1 pressureto said control. v

' MERWYN B. LINTON,

ably securing said container relative to said body

